From: Peter Bailey <lists@...>
Date: 2013-01-10T01:00:54+09:00
Subject: Re: One liner for filenames

"Jesús Gabriel y Galán" <jgabrielygalan@gmail.com> wrote in post 
#1091607:
> On Wed, Jan 9, 2013 at 4:09 PM, Robert Klemme
> <shortcutter@googlemail.com> wrote:
>>> ...
>>>
>>> I need to basically delete all of the files except for the first one,
>>> the one with the "_1" suffix at the end. Can I do that wiith a
>>> one-liner?
>>
>> ruby -r pathname -e 'Pathname.glob("*[^1].png").each(&:delete)'
>
> Careful, as this skips also filename_11.png, filename_21.png, etc.
> Building on this:
>
> ruby -r pathname -e 'Pathname.glob("*_{[^1],??}.png").each(&:delete)'
>
> Jesus.

Excellent. Thanks. Hans is right, though. Dir.glob is unsorted. Is that 
a problem here?

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